I've actually heard a fairly common motivation tip is to not tell people when you've started a new project or healthy habit.
Some people believe that sharing the news with people is what ultimately gives you the feelgood chemicals, and then suddenly you have less desire to do the thing.
I don't think this is to say that you shouldn't share your accomplishments. In fact, if you struggle with perfectionism, you might never think that you're totally finished a project. But if you're in the tenuous first stages of a new activity, it might benefit you to wait until things are a little more concrete before sharing the fun stuff.
How did you just describe the downfall of every hobby I've ever tried.
I try a hobby
I get excited
I tell someone about what I'm learning
Hobby dies
I am trying really hard to get back into my practicing hobbies after a hiatus, because I want to get good, but I'm also struggling with the fact that, by the time I'm good, I won't be able to appreciate it because I'm aware of all the practice I put into it, and it becomes my normal.
I also struggle with committing years to something.